Transcript N4C_tech_ko_wp3_Norut_HikersPDA

Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Technical kick-off meeting
Grosuplje, Sept. 22-25 2008
Karl Johan Grøttum
Northern Research Institute, Tromsø, Norway
[email protected]
www.norut.no
Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Robust data communication in the North
UAV-SAT
UAV-UAV
UAV-SHIP
BFT
UAV-DTN
DTN-DTN
Hikers PDA
Delay
Tolerant
Networks
Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Communication issues
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Northern Europe is a highly developed region
Laboratory for distributed systems
Fibre Infrastructure
Communication at sea
Communication in “empty” areas
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Hikers PDA:
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E-mail, Web-cache and (Not So)IM
Information-push (Your most important, RSS?)
Weather (snow, rain etc. in-field Weather services)
Health services (medical-, physical-, heart starter etc.)
Map with GPS for own location:
Maemo Mapper https://garage.maemo.org/projects/maemo-mapper/
• Photo blog or ad-hoc blog
(Crocopil application, Windows mobile with ad-hoc wlan net)
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Local information:
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Operators and guides
In-field Weather services
Geology and biology
Point Of Interests (telephone mountains?)
Installations
Authorities
Fishing- and hunting-permit
Access information (keys to cottages etc.)
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Nokia 810 application: Maemo Mapper
[#1037] Power saving mode for slow motion
(walking)
Date: 2008-06-06 18:15 Sender: Andrew Daviel On the N810
tablet (internal GPS), it is not the Bluetooth, it is the GPS chip
that consumes most power. The version of mapper I have
(2.4.1) does not turn on the chip when using localhost:gpsd but
does when using Bluetooth to talk to itself - I guess that the
N810 listens for Bluetooth location requests and turns on in
response (and times out if there are no requests for a while).
So, for the N810 at least, this feature (power saving mode
which makes a location request every 10-20 minutes) would
save battery. Even better would be to use gpsd and the Nokia
API to actually turn the chip on and off every few minutes - it
takes about 30 seconds to get a fix if it has a recent position
and almanac, so getting location every 5 minutes would be a
10x saving in GPS chip power (I estimate 10 hours of tablet
battery continually polling the GPS vs 100 hours almost always
idle)
Date: 2007-08-02 16:16 Sender: John Costigan Maemo Mapper
can't generally tell the bluetooth receiver how often to send
updates. It is the receiver's decision. The only other alternative
would be to connect to the receiver, get a single point of data,
then immediately disconnect. Perhaps there is a GPS receiver
that allows you to specify the time resolution of its output?
https://garage.maemo.org/tracker/index.php?func=detail&aid=1037&group_id=29&atid=188
Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Asus Eee application: Viking map
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Asus Eee application: GPS Drive
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
iPhone application: Emergency
Email:
Distress
An
Beacon
emergency
distress
GPS
beacon was
set off by
Locator
Karl Johan at
location
69.673233 ,
18.932022.
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
iPhone application: Air Sharing
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Hardware 1: PDA
List criteria's based on lessons learned from
summer test and SNC.
• Power (battery etc.)
• Temperature
• Humidity
• Weight
• Functional specifications:
GPS, Wlan, Bluetooth, SDK
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
PDA Candidates:
• Nokia N810 (compared with N800 and 770):
http://wiki.maemo.org/Comparison_of_Internet_Tablet_Models
• Asus Eee PC:
http://event.asus.com/eeepc/comparison/eeepc_comparison.htm
• iPhone:
http://www.apple.com/iphone/specs.html
• USB stick: Bootable and good for winter test?
Easy to carry and exchange with others.
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Nokia N810
• Power Management:
2.0mm Charger Connector
• Battery Capacity:
BP-4L 3.7V 1500 mAh
• Talk Time (estimated):
VoIP: up to 4 hours
• Standby Time (estimated):
Up to 12.0 days
• Size: 128 x 72 x 14 mm
• Weight: 225 g
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How long will the battery last?
•Idle, offline mode
- 270 hours
•Idle, WiFi on, power saving
mode
- 100 hours
•GPS chip on, CPU polling GPS
- 11 hours
•Idle, WiFi on, power saving
mode OFF
- 7 hours
•Idle, display backlight on
- 9 hours
•100% CPU (loop doing sqrt),
display backlight off
- 6 hours
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
Asus Eee 900 PC
Battery: Up to 2.5 hrs*
Power Output: 12V, 36W;
Input: 100-240V AC, 50/60Hz universal
Dimensions: 22.5cm(W) x 17.0cm(D) x 2cm~3.38cm(H)
Weight: 0.99 kg
Note: * Estimated maximum battery life under Windows XP is measured with
BatteryMark 4.0.1 (in Eee PC Super Hybrid Engine Power-Saving mode,
40% LCD brightness, Wi-Fi off, BT off( if available), and camera disabled).
Actual battery life may vary based on product settings, usage patterns and
environmental conditions.
* Estimated maximum battery life under Linux is measured with JEITA
Battery Run Time Measurement Method (in Eee PC Super Hybrid Engine
Power-Saving mode, JEITA defined LCD brightness, Wi-Fi off, BT off( if
available),and camera disabled). Actual battery life may vary based on
product settings, usage patterns and environmental conditions.
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
iPhone power and battery :
Built-in rechargeable lithium-ion battery
• Charging via USB to computer system or power
adapter
• Talk time: Up to 5 hours on 3G, Up to 10 hours on 2G
• Standby time: Up to 300 hours
• Internet use: Up to 5 hours on 3G, Up to 6 hours on
Wi-Fi
• Video playback: Up to 7 hours
• Audio playback: Up to 24 hours
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Networking for Communications Challenged Communities:
Architecture, Test Beds and Innovative Alliances
Grant Agreement: 223994
iPhone environmental requirements:
• Operating temperature: 32° to 95° F
(0° to 35° C)
• Non-operating temperature: -4° to 113° F
(-20° to 45° C)
• Relative humidity: 5% to 95% non-condensing
• Maximum operating altitude: 10,000 feet
(3000 m)
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